Due to the location of the body, authorities had said the death appeared suspicious. But there did not appear to be any external injuries and his wallet was still at the scene, police said.

Alaska Airlines described Morris as a “well-respected” pilot who was required to undergo physical exams twice a year. A spokesman said that as far as the airline was concerned, Morris was “in good health.”

It could be weeks before a final determination is made as the Los Angeles County coroner’s office completes a number of other tests, including neuropathology and toxicology exams, said Assistant Chief Ed Winter.

“If we don’t find anything obvious, those could take weeks,” he said. “We are still doing an autopsy; it’s premature for us to give any ruling on cause of death."